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There is a bit if middle ground for consumers who wish for a sound system that's more sophisticated than the one built into their smartphones but less bulky than your home stereo equipment. The wireless PumpItUp Speaker is one such device that lets you to really increase the volume of your music collection on the go.

This design by Sankalp Sinha is a compact gadget that takes up as much room on a table top as a compact disc. It's 4.5 centimeters tall in its closed position and around 8 centimeters when open. To activate the bluetooth PumpItUp Speaker, pull the perforated cap upwards. This expands the diaphragm inside to deliver good quality. A simple rotation of the top turns up the noise.